- /*
- * Copyright 1999-2004 The Apache Software Foundation
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
- package org.apache.commons.jxpath.servlet;
-
- import org.apache.commons.jxpath.Variables;
-
- /**
- * Implementation of the Variables interface that provides access
- * to a single object using a reserved name (keyword).
- *
- * @author Dmitri Plotnikov
- * @version $Revision: 1.6 $ $Date: 2004/02/29 14:17:40 $
- */
- public class KeywordVariables implements Variables {
-
- private String keyword;
- private Object object;
-
- public KeywordVariables(String keyword, Object object) {
- this.keyword = keyword;
- this.object = object;
- }
-
- public boolean isDeclaredVariable(String variable) {
- return variable.equals(keyword);
- }
-
- public Object getVariable(String variable) {
- if (variable.equals(keyword)) {
- return object;
- }
- return null;
- }
-
- public void declareVariable(String variable, Object value) {
- throw new UnsupportedOperationException(
- "Cannot declare new keyword variables.");
- }
-
- public void undeclareVariable(String variable) {
- throw new UnsupportedOperationException(
- "Cannot declare new keyword variables.");
- }
- }